The amount of a alpha-N-acetylneuraminide alpha-2,8-sialyltransferase (human) when measured in cerebrospinal fluid. The trait is level of alpha-N-acetylneuraminide alpha-2,8-sialyltransferase (human) in cerebrospinal fluid (OBA_2080138). Also known as: cerebrospinal fluid alpha-N-acetylneuraminide alpha-2,8-sialyltransferase (human) amount.